Slides in this set
HOW DO ENZYMES WORK
All enzymes reduce the activation energy
required for the reaction.
Lock and key an enzyme has a specifically
shaped active site which is complementary to
the shape of the substrate.
Induced fit as the substrate and the enzyme
molecules collide the enzyme changes shape
slightly so the active site fits more closely
around the active site.…read more
WHAT EFFECTS THE ACTIVITIES OF
A PH that is too high for an enzyme causes
the H+ ions to attack the tertiary structure of
the enzyme which causes them to denature.
A PH too low for an enzyme does not give the
enzyme enough H+ ions to maintain the
When a PH is at its optimum for an enzyme
the reaction occurs at its maximum rate.…read more
The different optimum values are due to the
places where the enzymes are found.
Pepsin is found in the stomach so therefore
needs a low PH optimum so it doesn't
denature in the stomach acid.
Trypsin is found in the small intestine which
has alkaline conditions and therefore the
optimum PH needs to be high.…read more